1 //------------------------------------------------------------------------------ 2 // <copyright file="ieee80211_node.h" company="Atheros"> 3 // Copyright (c) 2004-2010 Atheros Corporation. All rights reserved. 4 // 5 // 6 // Permission to use, copy, modify, and/or distribute this software for any 7 // purpose with or without fee is hereby granted, provided that the above 8 // copyright notice and this permission notice appear in all copies. 9 // 10 // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 // 18 // 19 //------------------------------------------------------------------------------ 20 //============================================================================== 21 // Author(s): ="Atheros" 22 //============================================================================== 23 #ifndef _IEEE80211_NODE_H_ 24 #define _IEEE80211_NODE_H_ 25 26 /* 27 * Node locking definitions. 28 */ 29 #define IEEE80211_NODE_LOCK_INIT(_nt) A_MUTEX_INIT(&(_nt)->nt_nodelock) 30 #define IEEE80211_NODE_LOCK_DESTROY(_nt) if (A_IS_MUTEX_VALID(&(_nt)->nt_nodelock)) { \ 31 A_MUTEX_DELETE(&(_nt)->nt_nodelock); } 32 33 #define IEEE80211_NODE_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) 34 #define IEEE80211_NODE_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) 35 #define IEEE80211_NODE_LOCK_BH(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) 36 #define IEEE80211_NODE_UNLOCK_BH(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) 37 #define IEEE80211_NODE_LOCK_ASSERT(_nt) 38 39 /* 40 * Node reference counting definitions. 41 * 42 * ieee80211_node_initref initialize the reference count to 1 43 * ieee80211_node_incref add a reference 44 * ieee80211_node_decref remove a reference 45 * ieee80211_node_dectestref remove a reference and return 1 if this 46 * is the last reference, otherwise 0 47 * ieee80211_node_refcnt reference count for printing (only) 48 */ 49 #define ieee80211_node_initref(_ni) ((_ni)->ni_refcnt = 1) 50 #define ieee80211_node_incref(_ni) ((_ni)->ni_refcnt++) 51 #define ieee80211_node_decref(_ni) ((_ni)->ni_refcnt--) 52 #define ieee80211_node_dectestref(_ni) (((_ni)->ni_refcnt--) == 1) 53 #define ieee80211_node_refcnt(_ni) ((_ni)->ni_refcnt) 54 55 #define IEEE80211_NODE_HASHSIZE 32 56 /* simple hash is enough for variation of macaddr */ 57 #define IEEE80211_NODE_HASH(addr) \ 58 (((const u8 *)(addr))[IEEE80211_ADDR_LEN - 1] % \ 59 IEEE80211_NODE_HASHSIZE) 60 61 /* 62 * Table of ieee80211_node instances. Each ieee80211com 63 * has at least one for holding the scan candidates. 64 * When operating as an access point or in ibss mode there 65 * is a second table for associated stations or neighbors. 66 */ 67 struct ieee80211_node_table { 68 void *nt_wmip; /* back reference */ 69 A_MUTEX_T nt_nodelock; /* on node table */ 70 struct bss *nt_node_first; /* information of all nodes */ 71 struct bss *nt_node_last; /* information of all nodes */ 72 struct bss *nt_hash[IEEE80211_NODE_HASHSIZE]; 73 const char *nt_name; /* for debugging */ 74 u32 nt_scangen; /* gen# for timeout scan */ 75 #ifdef THREAD_X 76 A_TIMER nt_inact_timer; 77 u8 isTimerArmed; /* is the node timer armed */ 78 #endif 79 u32 nt_nodeAge; /* node aging time */ 80 #ifdef OS_ROAM_MANAGEMENT 81 u32 nt_si_gen; /* gen# for scan indication*/ 82 #endif 83 }; 84 85 #ifdef THREAD_X 86 #define WLAN_NODE_INACT_TIMEOUT_MSEC 20000 87 #else 88 #define WLAN_NODE_INACT_TIMEOUT_MSEC 120000 89 #endif 90 91 #define WLAN_NODE_INACT_CNT 4 92 93 #endif /* _IEEE80211_NODE_H_ */ 94